Looking for Providence suggestions, group of 20

It's business (so $$ not an object). A private room would be a plus. The one leading the meeting is a vegetarian so Cap Grille's wine room would be a let-down for him. Prov Oyster Bar has a private room but it's booked the night we want. I'm drawing a blank....who else has a private room? L'Epicureo does, anyone else?

Actually, Sienna ("up on the Hill where they do do the boogie"--John Hartford...great song) might be a good choice. The food is great; the price is right;the service is cordial, but seriously professional; the wine list is good. and, in the back, there is a big room which I do believe might be used for groups such as yours.

Gracie's has a private dining area downstairs (two actually). One the wine room can seat up to eight I think. I am almost certain their larger room could support a party of 20.

Pane E Vino has an area in the back of the restaurant that can be reserved. It is not totally private. They are very accomodating of the menu. I had a wedding rehearsal dinner there almost 2 years ago for ~30 people and it was great. That it wasn't totally private wasn't really noticeable to me at all during the night.